Stapling head



A. L. WATSON. STAPLING HEAD-. APPLICATION FILED AUG.9. 1920.

1,434,936. Patented Nov. 7, 19225.

2 4 SHEETS-SHEET l.

A. L. WATSON.

STAPLING HEAD. APPLICATION FILED AUG.9, 1920. 1,434,936.

Patented Nov. 7, 19212;

4 SHEETS SHEET Z.

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STAPLING HEAD.

APPLICATION FILED AUG.9. 1920.

1,434,936. Patented Nov. 7, 1922;,

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STAPLING HEAD.

APPLICATION FILED AUG-9. r920.

Patented Nov 7, 1922 4 SHEETS.SHEE'I 4.

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tWMTEQ STATES FATENT @Fhl ALBERT L. WATSON, 03F PENN YAN, NEW YORK.

STAPLING HEAD.

Application filed August 9, 1920. Serial No. 402,172.

- the same in the material in which the staple is to be applied, by a single operation of the operating lever.

A. further object of the invention is to provide means for automatically operating the forming block, simultaneously with the downward movement of the staple moving plunger.

it still further object of the invention is to provide a reciprocating plunger housing and a reciprocating plunger operating within the housing, together with means for disengaging the plunger housing and plunger automatically to permit the plunger to form a staple.

Another object of the invention is to accomplish the feeding of the wire of which the staple is formech to the forming block, simultaneously with the return the operating lever.

lVith the foregoing and other objects in view which will appear as the description proceeds. the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment. of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings I y Figure 1 illustrates a front elevational view of a staple forming machine con- :tructed in accordance with the present invention.

Figure 2 illustrates a sectional. view taken on line 22 of Figure 1. n

Figure 3 illustrates a detail view partly in section of the forming block controlling lever. I

Figure 4. illustrates a fragmental front elevational view ofthe plunger and plunger housing. I

Figure 5 illustrates a detail View of one of the movable arms which connects the stroke of plunger housing and plunger operating therein. Figure (5 illustrates a feeding rollers.

.liigure illustrates a fragmental seedetail. view of the 1 tional view disclosing the means for securing the feeding tube to the body portion.

Figure 8 illustrates a side elevational view of the means for operating the feeding rollers.

Figure 9 illustrates a plan View of the roller operating pawls.

Figure 10 illustrates a front elevational view of the feeding rollers, and

Figure 11 illustrates a fragmental side elevational view disclosing the means for causing the operation of the feed roller operating rod.

Referring to the drawings in detail, the reference character 5 designates the body of the machine which isconnected to the support 6 and base 7, by means of the bolts 8 which have suitable connection with the support 6 through openings formed therein.

The body 5 includes a pair of spaced bars 9 and 10, to which are secured on opposite surfaces thereof, the plates 11, forming guide-ways for the movable carriage 12 which supports the movable elements of the machine, the movable carriage being constructed to operate in the guide-ways to cause the operation of the machine.

Having connection, with the carriage arm 12. is a reciprocating hollow plunger 13 which carries the cam member 14%, on the outer front surface thereof. for purposes to be hereinafter more fully described, and in which housing is Inovably supported the reciprocating staple forn'ier 15. which includes relatively long rod 15 formed with a threaded portion to be fitted in the hollow plunger 13, the upper end of the rodterminatiug at a point above the upper end of the body 5. the upper end of the rod 15 being threaded as at 16 to permit of adjustment of the former 1,5 with relation to the hollow plunger. y

The horizontal arms 17 have rigid connection with the reciprocating hollow plunger 13 adjacentthe upper end thereof. the arms extending laterally therefrom and as shown these. arms are apertured as at 18 to accommodate the lower ends of the coiled springs 19 which have their upper ends positioned in suitable openings formed in the transversely extending arm 20 which is provided with a 23 form a part of the lugs accommodate the upper ends of th coimecting arms 24-. which are disposed on opposite sides oil: the reciprocating hollow plunger '13. and are adapted I to move in the hearings the lower ends of the connecting arms being provided with shoulders 25 see Figure 5 that engage under the horizontal arms 17 for connectinvthe hollow plunger 13 and former 15.

Supported betweenthe upper end of the plunger 13, and the lower edge oi the'transversel 7 extending arm 20, are the collars 26 and 2 the collar 27 having connection with the'carriage 12 as at 27 for connecting the reciprocating hollow plunger 13, to the carriage 12, the coiled spring 29 being positioned'between the upper end of the hollow plunger 13 and. the sleeve 27 for cushioning the connection. between the hollow plunger 13 and bracket 28.

Cam members 30 are disposed on opposite sides of the reciprocating housing 13, the cam members having connection with the spaced bars 9 and 10 by means ot' the brackets 31 which extend laterally from the spaced bars 9 and 10 so that the cam members will lie'in the path of travel of the connecting arms 24 when the plunger 13 is moved downward ly in the torming o'f a staple. With this downward movement of the plunger 13, the lower ends of the connecting arms 24 move over the cam members 30 to disengage the arms 24 from the horizontal arms 17 so that further movemen oi. the operating lever will cause the staple former 15' to remain sta tionary while the plunger 13 moves thereover against the tension oi the coiled springs 19. ,Snaced brackets 32 are supporte by the bar 10, and each of these brackets is.

provided with a bearing 33 through which operates the wire feeding roller operating tion with. the bell cranl lever 35, the upper end oil which supports the pivoted. pawls 36 which operate over the teeth 37 tormed on the wire feeding roller 38.

centroller 38 so:thatmovementof the roller 38 produces a relative movement 'of the roller 31 to cause the flange 39 to move between the flanges 30, resulting in the wire of which the staples are formed, being moved between the rollers and passed through to the tormiiig mechanism of the machine.

An arm 40 is formed integral with the car- 'riage 12 and is provided with a bearing in upward movement of the operating. rod 841- to move the pivoted pawls over the wire ,it'eeding roller 38 to accomplish the feeding of the wire material indicated at a l; l1 is of course obvious that upon the return'movement of the operating rod 3.4,the pawls 36 are moved over the teeth-3'7 in an opposite direction to set the same for the next moveinent. In order that the upward movement of the operating rod 3 1 will be limited, at stop 15 is provided. the same being formed on the operating rod and adapted to contact with the under surface of the bearing 33, when the operating rod 34has reached the limit of its upward movement.

Supported at the lower end of the hollow plnnger 13, and carried by the former 15, is a forming head 46 which is grooved to provide a clearance for the hollow plunger 13 to permit the plunger 13 to move therethrough. The lower end of the forming head is out awav as at 17. a bolt- 18 bein sunported adjacent the cut away portion and on which bolt is supported the forming block 19 having an apertured ear 50 adapted to be embraced by the end 51 of the connecting arm 52, the opposite end of said connecting arm 52 being supported between the arms 53.

Between the upper ends of the arms 53, is the roller 56 adapted to move over the cam 14 to cause the forming block 41-9 to swing inwardly or to a position within the path of travel of the former 15', the coiled spring 57 being provided which embraces the rod 58 that has connection with arm 54, so that he forming block will be automatically returned to its inoperative position, when the hollowplunger is moved downwardly to the V mandrel 59, mounted on the base 7.- rod 34-. the lower end of which has connec- The 'lowcr end of the former 1.5 is slotted as at 60, and grooved on its under surface as at 61, so that-a wire may be moved in the grooved portion 61 and carried to a position inengagemen't with the mandrel 59. The slottedportion of the'former 15 provides uidewavs for thefin er 62 carried bv t: u g

the lower end of the hollow plunger 13.

Extending through a lateral opening formed in the lower end of the forming head is the wire feeding tube 63 held in such ir'ipenin'g bymeansot the bolt (id-provided with the notcl'ied portion ('35, adapted to embrace one of the corners of the wire feeding tube 63, the nut 66 beingprovided to secure the bolt 64: against movement within the opening, in which the same is supported.

shown, one edge of the wire feeding tube (33 is beveled as at 67 to cooperate with the beveled edge 68 ot the staple former so that when the staple forming plunger moves downwardly, a length of wire which extends through the wire feeding tube 63 is severed at this point, where upon the length of wire may be carried downwardly to the mandrel 59.

The operating means includes a lever so which has one end thereof pivotally connected, to the support (:5, as at 70, the lever 69 having connection with the carriage 12 through the medium of theconnecting link 71 which has its lower end pivotally connected to the lever 69 as at 72, the upper end thereof having pivotal connection with the carriage 12 as at 73.

It might be further stated, that the mandrel 59 is provided with a central rib to provide the camming surfaces 74;, which cam surfaces move the ends of the length oi? wire forming a staple to clamp the same into engagement with the material to which the staple is applied. a

In order that a positive feed of the w1re material 44, will be insured, the wire feeding roller 31 is formed with a groove to 4 receive the wire, the roller being supported by the lever 75 which has connection with the rod 76, forming a portion of the coiled spring 7 7 the upper end of the coiled spring 77 being anchored to the side bar 10 by means of the hook 78. It is therefore obvious that the tension of the coiled spring 77 tends to urge the arm 75 upwardly to move roller 31 into engagement with the wire feeding roller 38, and into contact with the wire being fed therebetween.

In the operation of the device, assuming that a length of wire has been severed, the former 15 connected to the lower end of the rod supporting the former 15, bends the severed length of wire about the former block 49 to "form the legs of a staple. The continued descent of the former and the driver operating the plunger 18 in unison, carries the cam surface le'lout of engagement with the roller 5%}, thus permitting the spring to lies the toggle and thereby to withdraw the inside former block 4,9 from the path of the driver to the position shown in Figure 2 of the drawings. When the former 15 has substantially reached the position as shown in Figure 2 of the drawings, the cam members become effective to move the arms 2st to the position as shown in Fig ure 5 of the drawings, breaking the positive connection between the driver and "former 15.

The former 15 now remains stationary,

while the driver continues to descend, forcpivotally supported adjacent to the mandrel, and adapted to move under the lower end of the hollow plunger, pivoted means for supporting the forming block, and means carried by the movable plunger and coopcrating with the pivoted formed supporting means for moving the former, under the hollow plunger, and means for delivering wire material to the mandrel.

2. In a staple forming machine, a body portion, a hollow plunger adapted to move on the body portion, arms pivotally carried by the hollow plunger, a roller carried by the arms, said arms being pivotally connected to the hollow plunger, a pivoted forming block at the lower end of the arm, a cam carried by the hollow plunger and adapted to move under the roller to cause the forming block to move under the hollow plunger to bend a wire delivered to the lower end of the hollow plunger, and means for delivering wire.

3. In a staple forming machine, abody portion, a hollow plun er supported on the body portion and adapted to move vertically with respect thereto, a former operating through the hollow plunger, a mandrel supported under the hollow plunger to cooperate therewith in the forming of a staple, pivoted arms supported on the body portion and carrying a forming block at one end thereof, said forming block being pivoted to move under the hollow plunger, and means for delivering wire to the lower end of the hollow plunger.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

ALBERT L. WATS-ON.

Witnesses SPENCER F. LINooLN, liar-m V; GRADY, 

